Light-stabilized organic polymers
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United States of America Patent
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Mar 5, 2002
Grant Date -
N/A
app pub date -
Nov 8, 1999
filing date -
May 8, 1997
priority date (Note) -
Expired
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Abstract
Compounds belonging to the group of enamines consisting of derivatives of .beta.-keto-esters or .beta.-keto-amides or 1,3-diketones with primary or secondary aliphatic or aromatic amines carrying at least one sterically hindered amine group having general formula (I) in the molecule. The compounds having general formula (I) can be used as antioxidants or light stabilizers for organic polymers.
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